A blade coated with this substance causes crippling pain to a wounded creature; creatures which do not feel pain are immune to its effects. Considerable chance of inflicting Pain on foes with every hit.

This blade coating poisons wounded opponents, yet it is ineffective against monsters whose physiology differs greatly from that of humans. Considerable chance of Poisoning foes with every hit.

Mystery Oil

unknown

Eliminates corrosion and improves low quality blades. Found (not reliably) in the kikimore queen's lair (on her body?), on the werewolf's body, on Azar Javed's body, in a chest in the old mine and in the trunk in the striga's chamber. Testing performed on said low-quality weapons such as the Rusty Sword have yielded no results.